We've done two Easter hotel brunches now and had fabulous meals at both: The Willard and The Fairmont. Highly recommended.

The Fairmont is a smaller, more light space and adult/modern-ish affair, the Willard was full of families, more spread out; darker rooms, more classic clubby decor.

Oh and be careful when reserving at Fairmont -- we had a misunderstanding and ended up with a reservation in the casual breakfast spot instead of the "big brunch" somehow. They graciously accommodated us at the brunch, but we were a small party dining early, could have been a more serious problem otherwise!